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PUNCH AND DIE.

No. 382,357. Patented May 8. 1888.

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E. P. GENNERT & D.- N. GLEASON PUNCH AND DIE.

N0. 382,357. Patented May 8, 188 8.-

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EMIL F. GENNER'I AND DUANE N. GLEASON, OF BROOKLYN, ASSIGNORS TO THE E.P. GLEASON MANUFACTURING COMPANY, OF NEWV YORK, N. Y.

PUNCH AND DIE.

SPECIFICATION forming part of Letters Patent No. 382,357, dated May 8,1888.

Application filed l ehruary- 8, 1888. Serial No. 263.376.

To all whom it may concern.-

Be it known that we, EMIL F. GENNERT and DUANE N. GLEASON, citizens ofthe United States of America, and residents of the city of Brooklyn, inthe county of Kings and State of New York, have invented certain new anduseful Improvements in Punches and Dies, of which the followingis aspecification.

Our invention relates to punches and dies to of that class employed forthe purpose of shearing or punching from sheet material strips the edgesof which follow curved or zigzagged lines or the lines of ornamentalfigures. Its object is to increase the capacity and range of a punch I5and die or series of punches and dies employed for such purposes, andthereby render them efficient when in operation to effect a saving inthe waste of material and an increasein the amount of the product; alsoto make them adaptable for producing strips varying in width, and yethaving edges of the same fig are or patern. Among the punches and diesheretofore used for the purpose stated, although numerous in variety andkind, there is not one 2 which will serve at the same time and in oneoperation to punch out one completed strip and sever another completedstrip from the same sheet of material, producing two complete stripseach operation (except the first) throughout the working of the entiresheet with absolutely no waste of material, save at the two edges of thesheet, (which is in amount but what would be produced by punching onestrip in the ordinary way.) Now this is what our invention aims toaccomplish; and it consists in the means by which'we accomplish it.

In the accompanying drawings, which form part ofihis specification,Figure 1 represents part of a sheet of material in process of divisioninto strips having ornament-allyscalloped edges. Fig. 2 represents theface of a punch having the characteristic features ofour invention. Fig.3 shows a longitudinal central section of a die-holder and device foractuating an expelling-plunger; also the face of a gagebar. Fig. 4 showsa horizontal view of the die-holder, gagebar, and a die (in place)having the characteristic features of our invention. Fig. 5 shows a sideview of a punch adapted to operate in conjunction with said Fig. 6 showsa central cross-section of die.

(X0 model.)

the bed-plate, die-plate, and other-connecting parts.

By noticing the lines forming the edges of the strips in Fig. 1 and thesides of Fig. 2 it will be observed that the figures forming the linesand the spaces between said figures are exactly alike in shape and size,so that when a strip is severed from the sheet of material the edge leftto the sheet will be formed of fig- 5o ures of precisely the same shapeand size as the figures forming the edge of the strip cut from it; andit is essential that the punch and die employed in this invention beconstructed so as to have the same relative characteristicsthat is tosay, that the figures forming the outline of the face of the punch mustbe precisely the same in shape and size as the figures forming thecavity-outline of the die-face; but all figures need not be of onepattern or size, as one side of the punch and the corresponding side ofthe die may be formed of large and complex figures,and the other sideofthe punch and its corresponding side of the die may be of small andmore simple figures, as is shown by Fig. 2, or asmall figure mayalternate with a large one.

Like letters. refer to like parts in all the figures.

A represents the bed-plate or die-holder, So which is adapted bysuitable means for attachment to a suitable operating-press. The form issimilar to such as are commonly used for p0wer-presses. A heavy plate,A, has vertical flanges a and a fixed to its sides, between which thedie B is securely held in position a suitable distance above the plate Ato allow the bar 0 a short vertical movement on its guiding shank c. Onthis bar 0 an expellingplunger, 1), which fills loosely the die-cavity,0 is secured by the screw-bolts d d. The guiding'shank c, firmlyattached to this bar, extends downwardthrough the plate A, and is theredecreased in diameter, so as to form a shoulder against which a metalwasher, e, by which it is there surrounded, has bearings.

A. spring, E, which .we prefer to be of elastic rubber, is placed underthis washer e, and is supported in position by the stirrup D,which dropsfrom the plate A, to which it is .firmly IOC fixed in any suitablemanner. The shank c of the bar 0 extends down through the spring E andstirrup D, the openings in the plate A and the stirrup D, through whichit passes, serving as guiding-bearings in which it can freely movelongitudinally. It will be seen that the tension of the spring E isexerted against the washer e, and, through the shank.

c and bar 0, tends to maintain the face of the expelling-plunger b flushwith the face of the die 13, it being prevented from protruding byreason of the ends of the bar 0 striking the under face of thedie-plate, as shown by the dotted lines at ff, Fig. 4.

The die B is made with a cavity, each side of which is outlined orformed of a series of any desired fancy or ornamental figures having thecharacteristics before stated. The face of the die at the sides havingthe cutting-edges (which coincide exactly with the lines forming thefigures) is raised, something more than the thickness of the material tobe used, above the face of the die at the ends, thus providing againstsevering the material by the ends of the punch, and the punch G is madeto conform to it, and not only be an exact counterpart, but also to havefigures on each of its sides which are precisely the same in size andshape as those on the respective sides of the die-cavity. It is alsoprovided with a shank, g, or other suitable means, to adapt it for attachment to a suitable operating-press.

From the flange a of the bed-plate A arms hh extend backward, and serveto carry a gage-bar, '5, made to be adjustable by means of its slottedarms is k, which are adapted to slide over the arms h h, and are securedthereon by set-screws m m, so as to hold the bar 'i secure in anyposition to which it may be adjusted. This gage-bar is provided withastop, n, adapted to enteraspace between two of the figures or scallopson the side of the sheet of material beingoperated upon, and serve tostop the sheet at the proper place. 1

The operation is as follows: The gage-bar t is first adjusted so itsface will be on the die about where the dotted line 0 is shown. Theupper right-hand corner of-the sheet of material to be worked is theninserted between the punch and the die, its side edge being pressedagainst the face of the gage. A stroke of the punch is made and aportion of one strip-severed from the sheet. (Shown by Fig. 1 at r.) Thesheet is then fed to the right just the length of the punch, and anotherportion of the strip is severed, and so on successively until the otherend of the sheet is reached and one completed strip severed from thesheet, as shown by s r, Fig. 1. This and the rim t are removed. Then thegage-bar z is moved back the'width of the strip to the position shown at2'. The sheet is againinserted and the operation proceeded with in thesame manner as before but it will be observed that this time two stripsare being made at the same time,

one directly under the punch and the other between the punch and thegage-bar; also, that the latter may be made of any width desiredaccordingly as thegage-bar is adjusted, the punch performing thefunction of a dou ble shear, but shearing on lines which form a seriesof fancy full figures instead of straight lines.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, ist 1. In a combination of a punch and dieadapted to operate conjointly with each other,

cutting-edges on its two sides which conform to the lines of figuresthat are precisely of the same size and shape as the spaces that occurbetween them, and a die-plate adapted to operate conjointly with thesame, and which has the portion of its face upon which the cuttingedgeis formed raised above the portion of its face which has no CutLingedge,in combinanation with agage-bar, asi, and suitable means for holding thesame in position, substantially in the manner and for the purposedescribed.

3. The following parts: apunch, as G, a die, as B, each having thecharacteristics described, bed-plate, as A, and bar, as O, with itsguidingshank c, plunger b, spring E, and stirrup D, when combined andarranged in the manner and for the purpose set forth.

In testimony that we claim the foregoing as our invention we have signedour names, in-

presence of two witnesses, this 12th of November, 1887. I

EMIL F. GENNERT. DUANE N. GLEASON.

\Vituesses:

O. F. KELLEY, JNO. N. MoLEAN.

, in which the figures forming the'outline of the 1

